![Chapter 07, Problem 019 [1] Your answer is partially correct. Try again. In the figure here, a block of ce slides down a frictionless ramp at angle ?:50.0 while an ice worker pulls on the block wa a rope with a orce that as a magnitude of 50.0 N and is directed up the ramp. As the block slides down through distance d = 0.450 m along the ramp, its kinetic energy increases by 82.0 J. How much greater would its kinetic energy have been if the rope had not been attached to the block?](http://img.homeworklib.com/questions/637618a0-30e0-11eb-b8f1-cfc1ea60b847.png?x-oss-process=image/resize,w_560)
Homework Answers
The equation for wordone by the rope is
W= Fd cos 180
= 50 N ( 0.450) cos 180 = -22.5 J
from the work energy theorem
W= del KE
W= 82 J- (22.5)
= 104.5J
change in work is
W= 104.5 J - 82 J= 22.5 J
the kinetic energy is equal to 22.5 J
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